<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>

<title>Geometric functions</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />



</head>
<body>
<div id="top"><!-- do not remove this div! -->


<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  
  <td id="projectlogo"><img alt="Logo" src="logo-mini.png"/></td>
  
  
  
   
  
  
 </tr>
 </tbody>
</table>
</div>

<!-- Generated by Doxygen 1.8.0 -->
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
      <li><a href="pages.html"><span>Related&#160;Pages</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="annotated.html"><span>Classes</span></a></li>
      <li><a href="files.html"><span>Files</span></a></li>
    </ul>
  </div>
</div>
<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">Geometric functions</div>  </div>
<div class="ingroups"><a class="el" href="a00139.html">GLM Core</a></div></div><!--header-->
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaa127ddc9d38f715125f91742d399eb6f"><td class="memTemplParams" colspan="2">template&lt;typename valType &gt; </td></tr>
<tr class="memitem:gaa127ddc9d38f715125f91742d399eb6f"><td class="memTemplItemLeft" align="right" valign="top">detail::tvec3&lt; valType &gt;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#gaa127ddc9d38f715125f91742d399eb6f">cross</a> (detail::tvec3&lt; valType &gt; const &amp;x, detail::tvec3&lt; valType &gt; const &amp;y)</td></tr>
<tr class="memitem:ga3fac0e61144f60184d961dd156709dd3"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga3fac0e61144f60184d961dd156709dd3"><td class="memTemplItemLeft" align="right" valign="top">genType::value_type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#ga3fac0e61144f60184d961dd156709dd3">distance</a> (genType const &amp;p0, genType const &amp;p1)</td></tr>
<tr class="memitem:ga7a31d2864eccfe665409e3b44f5e6e8d"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga7a31d2864eccfe665409e3b44f5e6e8d"><td class="memTemplItemLeft" align="right" valign="top">genType::value_type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#ga7a31d2864eccfe665409e3b44f5e6e8d">dot</a> (genType const &amp;x, genType const &amp;y)</td></tr>
<tr class="memitem:ga855fc5fd7779df1683482564956c6764"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga855fc5fd7779df1683482564956c6764"><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#ga855fc5fd7779df1683482564956c6764">faceforward</a> (genType const &amp;N, genType const &amp;I, genType const &amp;Nref)</td></tr>
<tr class="memitem:ga282360c8bb80b80d3c7f5bc00766d873"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga282360c8bb80b80d3c7f5bc00766d873"><td class="memTemplItemLeft" align="right" valign="top">genType::value_type&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#ga282360c8bb80b80d3c7f5bc00766d873">length</a> (genType const &amp;x)</td></tr>
<tr class="memitem:ga68b931c228750eeba844c273c54ca43d"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga68b931c228750eeba844c273c54ca43d"><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#ga68b931c228750eeba844c273c54ca43d">normalize</a> (genType const &amp;x)</td></tr>
<tr class="memitem:gabe1fa0bef5f854242eb70ce56e5a7d03"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gabe1fa0bef5f854242eb70ce56e5a7d03"><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#gabe1fa0bef5f854242eb70ce56e5a7d03">reflect</a> (genType const &amp;I, genType const &amp;N)</td></tr>
<tr class="memitem:gabbb4909d3e99a7a2411cc63252afbbd8"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gabbb4909d3e99a7a2411cc63252afbbd8"><td class="memTemplItemLeft" align="right" valign="top">genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00129.html#gabbb4909d3e99a7a2411cc63252afbbd8">refract</a> (genType const &amp;I, genType const &amp;N, typename genType::value_type const &amp;eta)</td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<p>These operate on vectors as vectors, not component-wise. </p>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gaa127ddc9d38f715125f91742d399eb6f"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">detail::tvec3&lt;valType&gt; glm::cross </td>
          <td>(</td>
          <td class="paramtype">detail::tvec3&lt; valType &gt; const &amp;&#160;</td>
          <td class="paramname"><em>x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">detail::tvec3&lt; valType &gt; const &amp;&#160;</td>
          <td class="paramname"><em>y</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Returns the cross product of x and y. </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">valType</td><td>Floating-point scalar types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/cross.xml">GLSL cross man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga3fac0e61144f60184d961dd156709dd3"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType::value_type glm::distance </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>p0</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>p1</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Returns the distance betwwen p0 and p1, i.e., length(p0 - p1). </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/distance.xml">GLSL distance man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga7a31d2864eccfe665409e3b44f5e6e8d"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType::value_type glm::dot </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>y</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Returns the dot product of x and y, i.e., result = x * y. </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/dot.xml">GLSL dot man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga855fc5fd7779df1683482564956c6764"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType glm::faceforward </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>N</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>I</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>Nref</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>If dot(Nref, I) &lt; 0.0, return N, otherwise, return -N. </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/faceforward.xml">GLSL faceforward man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga282360c8bb80b80d3c7f5bc00766d873"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType::value_type glm::length </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Returns the length of x, i.e., sqrt(x * x). </p>
<div class="fragment"><pre class="fragment"> </pre></div> <dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/length.xml">GLSL length man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="ga68b931c228750eeba844c273c54ca43d"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType glm::normalize </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Returns a vector in the same direction as x but with length of 1. </p>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/normalize.xml">GLSL normalize man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="gabe1fa0bef5f854242eb70ce56e5a7d03"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType glm::reflect </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>I</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>N</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>For the incident vector I and surface orientation N, returns the reflection direction : result = I - 2.0 * dot(N, I) * N. </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/reflect.xml">GLSL reflect man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
<a class="anchor" id="gabbb4909d3e99a7a2411cc63252afbbd8"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">genType glm::refract </td>
          <td>(</td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>I</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">genType const &amp;&#160;</td>
          <td class="paramname"><em>N</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">typename genType::value_type const &amp;&#160;</td>
          <td class="paramname"><em>eta</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>For the incident vector I and surface normal N, and the ratio of indices of refraction eta, return the refraction vector. </p>
<dl class=""><dt><b>Template Parameters:</b></dt><dd>
  <table class="">
    <tr><td class="paramname">genType</td><td>Floating-point vector types. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/refract.xml">GLSL refract man page</a> </dd>
<dd>
<a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.5 Geometric Functions</a> </dd></dl>

</div>
</div>
</div><!-- contents -->


<hr class="footer"/><address class="footer"><small>
Generated by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.0
</small></address>

</body>
</html>
